Jam

One jam, start to finish

Take C major. The shape is Pattern #3, the one that sits in a six-fret window your hand never leaves. The two chords are C and G, the first and the fifth note of the key, which players write as I and V.

The band plays C for a couple of bars, then G for a couple of bars, then round again. You play the shape over the top of it. There is nothing to switch and nothing to memorise: the same dots stay under your hand the whole way through.

The chart moves when the chord does

While the band is on C, home is C, and the chart marks it as the note everything leans on. When the chord changes to G, home moves to G. Same shape, same frets, a different centre of gravity. A cue rides the last bar before each change, so it never arrives behind your back.

Over G those same dots stop sounding like C major. They sound like G Mixolydian, and one note does most of that work: the ♭7, which here is F. The chart names it and marks it where it falls, because that is the note making the second chord sound like the second chord rather than more of the first.

One jam is free

C major, C to G, Pattern #3. That jam is free, and all of it is free. Not a clip and not a trial: the whole thing, at whatever tempo you set, for as long as you want to play. The limit is which jam you get, never how good it is.

Pro opens the other chord pairs, in every key whose shapes and chords you have unlocked. See pricing →

It listens, but nothing is scored

The app can listen while you jam. When you play a note from outside the key, it says so as you play, and once more in a short summary when you stop. The summary is gone when you leave the jam.

That part needs the band going to your ears alone: wired headphones, or a line-in from an audio interface. Out of speakers, the mic hears the band as well as you, and it would end up marking the band's notes as yours. So on speakers the band plays and the listening stays off.

Either way, nothing in a jam is scored. No drill, no history, nothing added to your practice count. That is what the room is for: the drills are where you are graded, and this is where you play.